10-19 Exercise 3: Prints the number with its digits reversed

2 like 0 dislike
20.7k views

Write a program that input four-digit number, then prints the number with its digits reversed .

寫一個輸入4位數字，反轉輸出這個數字的值

Example input: 

5455

Example output:

5545

Example input: 

5400

Example output:

45
[Exercise] Coding (C) - asked in Chapter 4: Expressions by (12.1k points)
ID: 27669 - Available when: Unlimited - Due to: Unlimited
edited by | 20.7k views

64 Answers

0 like 0 dislike 
Hidden content!
  * **   ****   * * *
int main()
{
       *    ** a,b,c,d;
  * ** **  *  * **  *      **    * **   * ** * **  **   *** *   * * *** **  ***
* * **   * ** *** **  
  {
* **   *   *     * *    * **  **** *    *******  * *  *** *  ** *
  }
* **   *    ** *****
  {
   ** ****** **** ****  *  *  * *** **   * ** ***  *   *  *     ***
  }
  * **** * ***  * 
**    *     * 
  ** *   * * **    * *   *  *** *** **  **  *    **  ***
  }
 ***  * ** *
**   **   **
** * *** *  ***   * **  ** *   * * *    *  *** ** *** ***    
  }
  * **    *** *  * 0;
}
answered by (-255 points)
1 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdio.h>
 *  ***    **    ** 
int main(){
   *** *    * * *       * **  *  str[4];
 * * ****  ****  *** *  *  *  ** *  * ** ***  *  
     *   *** *  ** *     * **
     ****  *   ********      * *        * ******   *
********* ** ** *    *** *** *** 0;
}
answered by (-116 points)
0 1
prog.c: In function 'main':
prog.c:5:13: error: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[4]' [-Werror=format=]
     scanf("%s",&str);
             ^
prog.c:6:5: error: implicit declaration of function 'strrev' [-Werror=implicit-function-declaration]
     strrev(str);
     ^~~~~~
cc1: all warnings being treated as errors
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>

int main()

{
**  ***    **** *    *     a,b,c,d;
*******  * **       *   * * **   *  ******** **   * *  * ** * *  *** *   *  *    *  **

*    ****  ** * **   ** *  * *  (d!=0)
*    ** * * ** ***    **  **
** *    * * **  ** *  *   **   **  ******     * *  ******** * * *  **  ** **   ***  
    }

 ** ** * * ***   **   ** * **  (c!=0)
 ** *  ***    ** ** ** *  **
 *** **  * * ** *** *   ** *  *  *   * * * * *   * ** (d==0)
** * ** *   ** ** * **      ***  *  *** * *** *   * * * **** ** **  **  * *    
*   * **  ****** * ** *

  * ***** ***     ** *      (b!=0)
  ****   ****** **  ** *  ** 
* **  ****  * * **    * ****       **  **   * ** * *  * (d==0 && c==0)
 **   *******   *   *  *   ** *  * ** *  * *   * * ** *    *  **  *   ** *
    }



**   *** ***  * ***   *      0;
}
answered by (-249 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include      ***  **
#include   *     *** *  

int input[4];
int digit;
int output = 0;
int i;
int main(){

* *  *   ** ** ** *  ** * **     **  ** *  *****   * **** **   ** * * *   ****  *** *  ****** *

 *   *  *  ** **    * ** *   += input[0]*1;
 *** ****  **     * *   *   * +=  *   *   
 *   * ** *** ** * * ***     += * * *  *** *
*    *  * **** **  **  *** * +=       ** ***


*   * * *   * **  *  * **       *     * * * * *** ****
 ****** *    * **   * *** *  *   0;
}
answered by (-286 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include   *  ****   *
#include    *  * *   * 

int input[4];
int digit;
int output = 0;
int i;
int main()
{

 *** ***  *  ** *****     *  * ***    *     *  ** ** *** *     *      *   * *      * **    * *   *   **  * **

   *  ***  * ***  *  ** *** ********* * 
   * * ***    *  **  **  *      *  * **** ** ****      *  *    += input[i]*pow(10,i);
******  * * **  * **  *   * *

 ** * *  ***  *** * *** ****** ** * * ** ** ** ** **  *
***    * ******  **  **    ** 0;
}
answered by (-286 points)
0 0
prog.c: In function 'main':
prog.c:14:28: error: implicit declaration of function 'pow' [-Werror=implicit-function-declaration]
         output += input[i]*pow(10,i);
                            ^~~
prog.c:14:28: error: incompatible implicit declaration of built-in function 'pow' [-Werror]
prog.c:14:28: note: include '<math.h>' or provide a declaration of 'pow'
cc1: all warnings being treated as errors
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>
int main()
{
 *    **   *  * **  ** **** * ***   a,b,c,d;
* **** ** **   * **    *  *  *   *  *     **** * ***  **** * ** ***    ** ***    ** **   
    if
* * ***  *  *****   *     * **  * **  *  **** **  * && c==0 && d==0)

** * ****  *   ***** *     ** ****  ** *   * *     *    *  ***** ** **  

 **  ***   * *  **   *   * if

 * **   **  * * * * * *  *  *  *** *** **** **  **** * * * && d==0)

 ** ***    *  **** *   *    ******  *   **   *  ***** ***  *      * **** ***

  *    * *   ***    ******** * * if

*  ** *   ***   *    *  *    *      ***      *****  ****

*  ****   ** * ***       * *  *     *    *  *        * ** **  *    * * *

 **   *** * ***   ****     ** **

 *   **  * ** ***** **    *****    *** ** *  **     *    ***  **  ****  **    * *  **

 *   ** *** * ** **  **  *   **  0;
}
answered by (-196 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include  *  **** **** *

int main()
{
***  a, b, c, d, e, f, g, h, x;
*** *  ** * *** ** * * *  ********** *  *   * * &b  * *    * ****
* ****  * **  **  ** * *
 * **  ***** **      
*** *     **  *  *
  * ** **** * 
   * * ******     ****
    * *  *** ** * *   *  
****   *  *** 0;
* *   * **
answered by (-66 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include  **** ******  **
int main ()
{
   **** **   **      ***   ** n, reversed_number = 0, remainder;
   ** **  * *****       *** ** * *  *  * *   &n);
*****  *   *  * ***** * * *  (n != 0)
  * * * *  *  * **** *     * *
**   *  **  *   ** ** * **  * *   *** ** ** ** ** *** * = n%10;
  * *   ** ** ***   ****    *  *  *** * * *      ** * ** ** * **  *   = *  *  ** ** * + remainder;
 * ** *  ** *   **    ** * **  * ** **   *** *    *  /= 10;
*      ****   * *** *   *  
 * *****   *  ******  * * *  *      *   ** **   reversed_number);
  **    *  ******* *       0;



}
answered by (-140 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
    **      *    
int  **   
int num; 

  **  *    * *    
 ** ** ** * *    *** * *   *  * 
* * ** * ****  *    
* **** *  
*** *  ****** ***  *  *  
* *** 
} 
** *** * * **   ** *  
return 0; 
}
answered by (-141 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output
Case 5: Wrong output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output
Case 5: Wrong output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output
Case 5: Wrong output
commented by (4.3k points)
0 0
-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output
Case 5: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdlib.h>

using namespace std;

int main()
{
** * *** * *  **   * *** ***    x;
***** * *   * * **   ** ** * * *  *  *  **   
** ** ** * * ** **  * ****** *   * *** * *  *   ** ** *  ***  ** *   *  * *** * * ****           
** ** **    *** * *     *  ************    ** *  *  *** *     *   **** *  * *   * 
   ***    * ** *      **   **  ****  ***  *  * **    ** *    **  ** *      * *    * *  *  *  *    **       
**    ***   *     ***    ***       **    * *  *** ** 
 ***    * *  *** * ***  *  *   *   *     * *******  *  ** *        *  *** * * **** ***   * ;
*  ***   **********  * * *
* * *   *  **   * *  *  *** * 0;
}
answered by (-141 points)
0 0
prog.c:3:1: error: unknown type name 'using'
 using namespace std;
 ^~~~~
prog.c:3:17: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'std'
 using namespace std;
                 ^~~
prog.c: In function 'main':
prog.c:7:5: error: unknown type name 'string'
     string x;
     ^~~~~~
prog.c:8:11: error: 'cin' undeclared (first use in this function)
     while(cin>>x){
           ^~~
prog.c:8:11: note: each undeclared identifier is reported only once for each function it appears in
prog.c:10:24: error: request for member 'length' in something not a structure or union
         for(int i=0;i<x.length();i++){
                        ^
prog.c:11:22: error: request for member 'length' in something not a structure or union
             re[i]=x[x.length()-i-1];
                      ^
prog.c:13:9: error: 'cout' undeclared (first use in this function)
         cout<<atoi(re)<<endl ;
         ^~~~
prog.c:13:25: error: 'endl' undeclared (first use in this function)
         cout<<atoi(re)<<endl ;
                         ^~~~
commented by (4.3k points)
Page:
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:104.23.197.64
©2016-2026

Related questions

1 like 1 dislike
85 answers
10-26 Exercise 2: Displays the number of its digits and their sum
[Exercise] Coding (C) - asked Oct 26, 2017 in Chapter 6: Loops by semicolon (5.2k points)
ID: 28914 - Available when: 2017-10-26 18:00 - Due to: Unlimited | 20.6k views
12,783 questions
183,442 answers
172,219 comments
4,824 users